Runtools provide a number of additional functions for working with code cells in the IPython notebook:

Code Cell Execution

• Execute a single cell
• Execute from top cell to currently selected cell
• Execute from currently selected cell to bottom cell
• Execute all cells
• Execute all cells, ignore exceptions (requires https://github.com/ipython/ipython/pull/6521)
• Execute marked code cells (cells with green gutter area are marked)
• Stop execution (duplicate to standard toolbar button)

Code Cell Marking

• Mark one or more code cell

Code Cell Display

• Hide or show input (i.e. the source code) of marked code cells
• Hide or show output of marked code cells

Description

The runtools extension adds a button to turn on/off a floating toolbar:

This adds Code execution buttons:

Codecells can be marked by clicking on the gutter of a codecell or by clicking on the markers toolbar:

A IPython notebook with marked cells looks like this:

Installation

Follow the installation instructions appropriate to your IPython version as explained on the main wiki home pages:

• Home generic
• Home 4.x (Jupyter)
• Home 3.x
• Home 2.x

Internals

New metadata elements added to each cell:

• cell.metadata.hide_input - hide input field of the cell
• cell.metadata.hide_output - hide output field of the cell
• cell.metadata.run_control.marked - mark a codecell